Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b275da0e21f0120…

MALICIOUS

PDF

55.4 KB Created: 2020-08-24 12:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07830a753be6b2c12dc277094bb51aed SHA-1: 56e3edb52989bdc83ced6af0cdb9645c9be02886 SHA-256: 0b275da0e21f0120537904fe43c27d07532bb7c6be3eec66bffb807eaa5b255a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru). This behavior is indicative of a link farm designed to obscure malicious destinations or distribute malware. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs confirms the intent to redirect users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=app+even++minecraft In PDF document text
    • http://dijokix.nhvfd18.org/uploads/1/3/0/7/130739595/pewukewuxenamuv_tiwad_tuwudoguzolol_mopab.pdfIn PDF document text
    • http://files.hillcresteastpoint.org/uploads/1/3/2/7/132712080/5313812.pdfIn PDF document text
    • http://files.hwcroquetclub.com/uploads/1/3/1/4/131453588/pukon_budejopafo_xodozogudu.pdfIn PDF document text
    • http://files.ponderingcat.com/uploads/1/3/1/3/131384429/4dfa0ac6ee05.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/uidai_aadhar_password.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9894/files/breville_bread_maker_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/ludivovuxupixupegofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1180/0220/files/soursop_health_benefits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/60613533822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0677/8777/files/jerekana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0973/2771/files/functional_data_analysis_ramsay_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3728/6812/files/honeywell_pro_5000_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/2723/9836/files/proform_cardio_hiit_trainer_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/43860924818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/galaxy_a50_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/vezaputijimanukek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/70475301118.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF6 5000 bytes
SHA-256: 8397c090932b911f53e9b1fcfeb5382e247f2c6af73569aac46c5c10a1e3f972
font_01_sfnt_off0000ace1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACE1 10332 bytes
SHA-256: 18934811e763cdc246f7126fe0b00fc37c7160ccb4f1a7b8a8b43e332cbcebc7

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